Weather Flashcards
What situation is most conducive to the formation of radiation fog?
A. The movement of cold air over much warmer water.
B. Warm, moist air over low, flatland areas on clear, calm nights.
C. Moist, tropical air moving over cold, offshore water.
B. Warm, moist air over low, flatland areas on clear, calm nights.
Answer (B) is correct. (AC 00-6B Chap 16) ( ? )
Radiation fog is shallow fog of which ground fog is one form. It occurs under conditions of clear skies, little or no wind, and a small temperature/dew point spread. The fog forms almost exclusively at night or near dawn as a result of terrestrial radiation cooling the ground and the ground cooling the air on contact with it.
Low-level turbulence can occur and icing can become hazardous in which type of fog?
A. Upslope fog.
B. Rain-induced fog.
C. Steam fog.
C. Steam fog.
Answer (C) is correct. (AC 00-6B Chap 16) ( ? )
Steam fog forms in winter when cold, dry air passes from land areas over comparatively warm ocean waters and is composed entirely of water droplets that often freeze quickly. Low-level turbulence can occur, and icing can become hazardous.
What types of fog depend upon wind in order to exist?
A. Steam fog and ground fog.
B. Advection fog and upslope fog.
C. Radiation fog and ice fog.
B. Advection fog and upslope fog.
Answer (B) is correct. (AC 00-6B Chap 16) ( ? )
Advection fog forms when moist air moves over colder ground or water. It is most common in coastal areas. Upslope fog forms when wind blows moist air upward over rising terrain and the air cools below its dew point. Both advection fog and upslope fog require wind to move air masses.
In which situation is advection fog most likely to form?
A. A warm, moist air mass on the windward side of mountains.
B. An air mass moving inland from the coast in winter.
C. A light breeze blowing colder air out to sea.
B. An air mass moving inland from the coast in winter.
Answer (B) is correct. (AC 00-6B Chap 16) ( ? )
Advection fog forms when moist air moves over colder ground or water. It is most common in coastal areas.
Clouds, fog, or dew will always form when
A. water vapor condenses.
B. relative humidity reaches 100 percent.
C. water vapor is present.
A. water vapor condenses.
Answer (A) is correct. (AC 00-6B Chap 3) ( ? )
As water vapor condenses, it becomes visible as clouds, fog, or dew.
